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Temporal range: Late Oligocene–Recent
Koala climbing tree.jpg
Phascolarctos cinereus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Suborder: Vombatiformes
Infraorder: Phascolarctomorphia
Aplin & Archer, 1987
Family: Phascolarctidae
Owen, 1839

The Phascolarctidae (φάσκωλος (phaskolos) - pouch or bag, ἄρκτος (arktos) - bear, from the Greek phascolos + arctos meaning pouched bear) is a family of marsupials of the order Diprotodontia, consisting of only one extant species, the koala,[1] and six well-known fossil species, with another five less well known fossil species, and two fossil species of the genus Koobor, whose taxonomy is debatable but are placed in this group. The closest relatives of the Phascolarctidae are the wombats, which comprise the family Vombatidae.[2]

The fossil record of the family dates back to the Middle Miocene[3] or Late Oligocene.[4]


Family Phascolarctidae[1]

  • Genus Nimiokoala
  • Genus Invictokoala[5]
    • Invictokoala monticola
  • Genus Madakoala
    • Madakoala robustus
    • Madakoala wellsi
    • Madakoala devisi
  • Genus Litokoala
    • Litokoala garyjohnstoni
    • Litokoala kutjamarpensis
    • Litokoala kanunkaensis
  • Genus Koobor
    • Koobor jimbarrati
    • Koobor notabilis
  • Genus Perikoala
    • Perikoala palankarinnica
    • Perikoala robustus
  • Genus Phascolarctos
    • Phascolarctos maris
    • Koala - Phascolarctos cinereus
    • Giant koala - Phascolarctos stirtoni
  • Phascolarctos yorkensis (formerly Cundokoala yorkensis)[6]
  • Genus Priscakoala
    • Priscakoala lucyturnbullae[4]


  1. ^ a b c Groves, C. P. (2005). "Family Phascolarctidae". In Wilson, D. E.; Reeder, D. M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 43. ISBN 978-0-8018-8221-0. OCLC 62265494.
  2. ^ Groves, C. P. (2005). "Suborder Vombatiformes". In Wilson, D. E.; Reeder, D. M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 43–44. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. ^ Benton, M.J. (2005). Vertebrate Palaeontology. Oxford. p. 314.
  4. ^ a b Karen Black; et al. (2012). "New Tertiary koala (Marsupialia, Phascolarctidae) from Riversleigh, Australia, with a revision of phascolarctid phylogenetics, paleoecology, and paleobiodiversity". Journal of Vertebrate Paleontology. 32 (1): 125–138. doi:10.1080/02724634.2012.626825.
  5. ^ Gilbert J. Price and Scott A. Hocknull (2011). "Invictokoala monticola gen. et sp. nov. (Phascolarctidae, Marsupialia), a Pleistocene plesiomorphic koala holdover from Oligocene ancestors". Journal of Systematic Palaeontology. 9 (2): 327–335. doi:10.1080/14772019.2010.504079.
  6. ^ Talent, John A. (2012). Earth and Life. Springer. p. 1047. ISBN 9789048134281.

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